Don't import the same Objective-C method twice (recursively).
Don't import the same Objective-C method twice (recursively).

Swift SVN r11812

tjw/swift,ben-ng/swift,kstaring/swift,benlangmuir/swift,MukeshKumarS/Swift,Ivacker/swift,sdulal/swift,dreamsxin/swift,gmilos/swift,xwu/swift,hooman/swift,shahmishal/swift,karwa/swift,shahmishal/swift,JaSpa/swift,IngmarStein/swift,adrfer/swift,johnno1962d/swift,harlanhaskins/swift,gribozavr/swift,gmilos/swift,shahmishal/swift,sdulal/swift,benlangmuir/swift,IngmarStein/swift,karwa/swift,austinzheng/swift,alblue/swift,KrishMunot/swift,airspeedswift/swift,jmgc/swift,codestergit/swift,Ivacker/swift,IngmarStein/swift,deyton/swift,parkera/swift,LeoShimonaka/swift,mightydeveloper/swift,zisko/swift,swiftix/swift.old,parkera/swift,huonw/swift,atrick/swift,Jnosh/swift,xedin/swift,allevato/swift,xedin/swift,devincoughlin/swift,return/swift,aschwaighofer/swift,xedin/swift,Jnosh/swift,khizkhiz/swift,modocache/swift,hughbe/swift,IngmarStein/swift,gregomni/swift,JaSpa/swift,OscarSwanros/swift,jckarter/swift,ken0nek/swift,karwa/swift,karwa/swift,johnno1962d/swift,amraboelela/swift,codestergit/swift,aschwaighofer/swift,return/swift,xedin/swift,gregomni/swift,frootloops/swift,allevato/swift,dduan/swift,JGiola/swift,mightydeveloper/swift,brentdax/swift,jckarter/swift,SwiftAndroid/swift,ben-ng/swift,brentdax/swift,austinzheng/swift,tkremenek/swift,jmgc/swift,airspeedswift/swift,CodaFi/swift,lorentey/swift,jmgc/swift,uasys/swift,amraboelela/swift,sdulal/swift,manavgabhawala/swift,danielmartin/swift,MukeshKumarS/Swift,frootloops/swift,Ivacker/swift,codestergit/swift,jopamer/swift,mightydeveloper/swift,JGiola/swift,gribozavr/swift,CodaFi/swift,frootloops/swift,manavgabhawala/swift,harlanhaskins/swift,ahoppen/swift,russbishop/swift,benlangmuir/swift,shajrawi/swift,jopamer/swift,gmilos/swift,emilstahl/swift,milseman/swift,jckarter/swift,arvedviehweger/swift,gmilos/swift,deyton/swift,xwu/swift,jtbandes/swift,kentya6/swift,codestergit/swift,austinzheng/swift,OscarSwanros/swift,huonw/swift,mightydeveloper/swift,tardieu/swift,jckarter/swift,uasys/swift,russbishop/swift,cbrentharris/swift,jopamer/swift,ahoppen/swift,felix91gr/swift,gottesmm/swift,tinysun212/swift-windows,russbishop/swift,stephentyrone/swift,SwiftAndroid/swift,mightydeveloper/swift,return/swift,slavapestov/swift,kusl/swift,Jnosh/swift,russbishop/swift,arvedviehweger/swift,Ivacker/swift,aschwaighofer/swift,adrfer/swift,jopamer/swift,CodaFi/swift,benlangmuir/swift,stephentyrone/swift,LeoShimonaka/swift,kperryua/swift,shahmishal/swift,arvedviehweger/swift,hughbe/swift,aschwaighofer/swift,ken0nek/swift,atrick/swift,russbishop/swift,JaSpa/swift,kentya6/swift,sdulal/swift,emilstahl/swift,brentdax/swift,swiftix/swift.old,Ivacker/swift,codestergit/swift,johnno1962d/swift,austinzheng/swift,gribozavr/swift,harlanhaskins/swift,ken0nek/swift,shahmishal/swift,kentya6/swift,CodaFi/swift,shajrawi/swift,OscarSwanros/swift,swiftix/swift.old,milseman/swift,rudkx/swift,nathawes/swift,russbishop/swift,adrfer/swift,SwiftAndroid/swift,xwu/swift,practicalswift/swift,sschiau/swift,CodaFi/swift,jtbandes/swift,gribozavr/swift,deyton/swift,dduan/swift,sschiau/swift,djwbrown/swift,apple/swift,swiftix/swift,arvedviehweger/swift,amraboelela/swift,practicalswift/swift,bitjammer/swift,MukeshKumarS/Swift,practicalswift/swift,jckarter/swift,rudkx/swift,kusl/swift,danielmartin/swift,IngmarStein/swift,gregomni/swift,shajrawi/swift,parkera/swift,lorentey/swift,johnno1962d/swift,cbrentharris/swift,calebd/swift,modocache/swift,emilstahl/swift,emilstahl/swift,uasys/swift,JaSpa/swift,ken0nek/swift,parkera/swift,kusl/swift,cbrentharris/swift,gribozavr/swift,JaSpa/swift,kusl/swift,jopamer/swift,calebd/swift,khizkhiz/swift,brentdax/swift,milseman/swift,djwbrown/swift,modocache/swift,sschiau/swift,emilstahl/swift,Ivacker/swift,nathawes/swift,tinysun212/swift-windows,Jnosh/swift,LeoShimonaka/swift,natecook1000/swift,ben-ng/swift,karwa/swift,emilstahl/swift,xedin/swift,tkremenek/swift,lorentey/swift,kentya6/swift,huonw/swift,airspeedswift/swift,gregomni/swift,gottesmm/swift,rudkx/swift,CodaFi/swift,swiftix/swift.old,ben-ng/swift,natecook1000/swift,cbrentharris/swift,parkera/swift,alblue/swift,gmilos/swift,ahoppen/swift,bitjammer/swift,lorentey/swift,jckarter/swift,alblue/swift,kentya6/swift,kstaring/swift,LeoShimonaka/swift,felix91gr/swift,bitjammer/swift,slavapestov/swift,uasys/swift,swiftix/swift.old,huonw/swift,ahoppen/swift,xwu/swift,emilstahl/swift,MukeshKumarS/Swift,practicalswift/swift,Jnosh/swift,devincoughlin/swift,glessard/swift,rudkx/swift,sdulal/swift,KrishMunot/swift,nathawes/swift,sdulal/swift,gottesmm/swift,zisko/swift,adrfer/swift,sschiau/swift,gmilos/swift,airspeedswift/swift,LeoShimonaka/swift,apple/swift,bitjammer/swift,codestergit/swift,rudkx/swift,shajrawi/swift,devincoughlin/swift,lorentey/swift,shahmishal/swift,johnno1962d/swift,roambotics/swift,harlanhaskins/swift,jopamer/swift,allevato/swift,adrfer/swift,ken0nek/swift,natecook1000/swift,ken0nek/swift,allevato/swift,felix91gr/swift,slavapestov/swift,gregomni/swift,khizkhiz/swift,modocache/swift,zisko/swift,hooman/swift,natecook1000/swift,tinysu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